[Comparative study of potassium-sparing effects of triamterene and amiloride in the treatment with hydrochlorothiazide].

Hydrochlorothiazide (HCT), 25 or 50 mg a day, alone and in combination with triamterene (T), 50 and 100 mg, respectively, or amiloride (A), 2.5 and 5 mg, respectively, was examined for effects on daily urinary potassium and sodium excretion. Daily sodium excretion was increased 1.